NFPA 704 Hazardous Materials Identification Flashcards
7 cards from real NFPA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 NFPA 704 Hazardous Materials Identification flashcards as text
A flammability rating of 4 in NFPA 704 describes a material that:
Answer: Burns readily at ambient conditions with a flash point below 73°F (22.8°C)
A flammability rating of 4 indicates materials that rapidly vaporize at normal temperatures, with a flash point below 73°F and a boiling point below 100°F.
Which NFPA 704 health rating indicates exposure could cause death?
Answer: 4
A health rating of 4 indicates that very short exposure could cause death or major residual injury, even with emergency responder protective equipment.
A flammability rating of 1 in NFPA 704 applies to materials that:
Answer: Must be preheated to burn, with a flash point above 200°F (93.3°C)
A flammability rating of 1 applies to materials that must be preheated before ignition can occur, with flash points above 200°F (93.3°C), such as mineral oil.
An instability rating of 3 in NFPA 704 means the material:
Answer: Can detonate or explode but requires a strong initiating source
An instability rating of 3 means the material can detonate or explode but requires a strong initiating source such as heat, shock, or detonator.
Which NFPA 704 health rating indicates 'extreme danger' where serious injury is likely from short exposure?
Answer: 3
A health rating of 3 indicates short exposure could cause serious temporary or residual injury, requiring full protective equipment for emergency responders.
In NFPA 704, a flammability rating of 2 applies to liquids with a flash point in which range?
Answer: Between 100°F and 200°F (37.8–93.3°C)
A flammability rating of 2 applies to liquids with flash points between 100°F and 200°F (37.8–93.3°C), which must be moderately heated before ignition.
An instability rating of 4 in NFPA 704 indicates the material:
Answer: Is readily capable of detonation or explosive decomposition at normal temperatures
An instability rating of 4 means the material is readily capable of detonation or explosive decomposition at normal temperatures and pressures, representing the maximum reactivity hazard.